PIC32MX420F032HT-40I/PT - 32-bit MCU 32KB Flash 40MHz TQFP-64
MPN: PIC32MX420F032HT-40I/PT ✓ Hoạt độngPIC32MX420F032HT-40I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals (timers, ADC, communication ports, I/O). The PIC32MX family combines 32-bit MIPS performance with PIC peripheral integration, targeting cost-sensitive embedded applications. The M4K core supports single-cycle multiply, deterministic interrupt response, and the MPLAB Harmony software framework, making this part family a 32-bit performance upgrade path for designers familiar with PIC16/PIC24 devices.
Key features of this part include USB-OTG (Full-Speed) with on-chip transceiver, a 10-bit ADC with up to 1 Msps conversion rate, two I2C, two SPI, two UART modules, five 16-bit timers, four input-capture and four output-compare PWM channels, and a Parallel Master Port (PMP) for external bus peripherals. The 64-pin TQFP footprint exposes the full peripheral set including USB D+/D-, while a 32 KB Flash / 8 KB RAM memory map comfortably supports small RTOS, USB stacks (Microchip MLA) and graphical display protocols.
Typical applications include industrial control panels, USB peripherals (HID, CDC, vendor class), low-cost graphical HMI with PMP-connected LCDs, sensor aggregation gateways, and consumer appliances. Designers select the PIC32MX420 series when a 32-bit core, native USB, and a small footprint are needed at a sub-$3 price point.
Design considerations include careful analog/digital ground partitioning to maximise ADC accuracy, decoupling VDD/VSS with 100 nF plus 10 µF bulk capacitors close to the pins, and proper impedance matching on the USB D+/D- differential pair for Full-Speed compliance.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX420F032HT-40I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX420F032HT-40I/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, DMA Channels, MSL Level.
PIC32MX420F032HT-40V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX420F032H-40I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX320F064HT-40I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX340F128HT-80I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F128L-80V/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX420F032HT-40I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Core Series | PIC32MX |
| Family | PIC32MX3XX/4XX |
| Maximum Clock Speed | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| USB | USB-OTG Full-Speed with on-chip transceiver |
| ADC | 10-bit, up to 16 channels (1 Msps) |
| Hộp | 64-TQFP (PT) 10x10 mm |
| Nhiệt độ hoạt động | -40 °C to +85 °C (industrial) |
| I/O Pins | 53 (approx., package-dependent) |
| Timers | 5 x 16-bit |
| Communication | 2x UART, 2x SPI, 2x I2C |
| PWM / Output Compare | 4 x 16-bit OC, 5 x Input Capture |
| Parallel Master Port (PMP) | Yes (for external LCD/FPGA) |
| DMA | 8-channel |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX420F032HT-40I/PT
| Chân 1 | RF11 — I/O port RF11 |
| Chân 2 | RF0 — I/O port RF0 |
| Chân 3 | RF1 — I/O port RF1 |
| Chân 4 | RG2 — I/O port RG2 |
| Chân 5 | RG3 — I/O port RG3 |
| Chân 6 | RA0 — I/O port RA0 / analog input |
| Chân 7 | RA1 — I/O port RA1 / analog input |
| Chân 8 | RB0 — I/O port RB0 / analog input |
| Chân 9 | RB1 — I/O port RB1 / analog input |
| Chân 10 | RB2 — I/O port RB2 / analog input |
| Chân 11 | RB3 — I/O port RB3 / analog input |
| Chân 12 | RB4 — I/O port RB4 / analog input |
| Chân 13 | RB5 — I/O port RB5 / analog input |
| Chân 14 | RB6 — I/O port RB6 / PGED2 (ICSP data) |
| Chân 15 | RB7 — I/O port RB7 / PGEC2 (ICSP clock) |
| Chân 16 | RB8 — I/O port RB8 / analog input |
| Chân 17 | RB9 — I/O port RB9 / analog input |
| Chân 18 | RB10 — I/O port RB10 |
| Chân 19 | RB11 — I/O port RB11 |
| Chân 20 | RB12 — I/O port RB12 |
| Chân 21 | RB13 — I/O port RB13 |
| Chân 22 | RB14 — I/O port RB14 |
| Chân 23 | RB15 — I/O port RB15 |
| Chân 24 | RF4 — I/O port RF4 |
| Chân 25 | RF5 — I/O port RF5 |
| Chân 26 | RD0 — I/O port RD0 |
| Chân 27 | RD1 — I/O port RD1 |
| Chân 28 | RD2 — I/O port RD2 |
| Chân 29 | RD3 — I/O port RD3 |
| Chân 30 | RD4 — I/O port RD4 |
| Chân 31 | RD5 — I/O port RD5 |
| Chân 32 | RD6 — I/O port RD6 |
| Chân 33 | RD7 — I/O port RD7 |
| Chân 34 | RC13 — I/O port RC13 |
| Chân 35 | RC14 — I/O port RC14 |
| Chân 36 | RD8 — I/O port RD8 |
| Chân 37 | RD9 — I/O port RD9 |
| Chân 38 | RD10 — I/O port RD10 |
| Chân 39 | RD11 — I/O port RD11 |
| Chân 40 | RD12 — I/O port RD12 |
| Chân 41 | RD13 — I/O port RD13 |
| Chân 42 | RD14 — I/O port RD14 |
| Chân 43 | RD15 — I/O port RD15 |
| Chân 44 | RG6 — I/O port RG6 |
| Chân 45 | RG7 — I/O port RG7 |
| Chân 46 | RG8 — I/O port RG8 |
| Chân 47 | RG9 — I/O port RG9 |
| Chân 48 | VSS — Ground reference |
| Chân 49 | VDD — Supply voltage 2.3-3.6 V |
| Chân 50 | RF3 — I/O port RF3 |
| Chân 51 | RF2 — I/O port RF2 |
| Chân 52 | RF6 — I/O port RF6 / USB D- |
| Chân 53 | RF7 — I/O port RF7 / USB D+ |
| Chân 54 | RF8 — I/O port RF8 |
| Chân 55 | VDD — Supply voltage 2.3-3.6 V |
| Chân 56 | VSS — Ground reference |
| Chân 57 | RA2 — I/O port RA2 |
| Chân 58 | RA3 — I/O port RA3 |
| Chân 59 | RA4 — I/O port RA4 |
| Chân 60 | RA5 — I/O port RA5 |
| Chân 61 | RC1 — I/O port RC1 |
| Chân 62 | RC2 — I/O port RC2 |
| Chân 63 | RC3 — I/O port RC3 |
| Chân 64 | RC4 — I/O port RC4 |
Ứng dụng tiêu biểu
PIC32MX420F032HT-40I/PT phù hợp cho 7 Áp dụngs: USB HID Industrial Keypad, Low-Cost Graphical HMI with PMP LCD, Sensor Aggregation Gateway, USB Vendor Class Data Acquisition, Home Appliance Control Board, POS / Weighing Scale with PMP Display, Industrial CAN Gateway Bridge (USB-CAN).
USB HID Industrial Keypad
The PIC32MX420F032HT-40I/PT is ideal for USB HID industrial keypads because the on-chip USB-OTG Full-Speed controller eliminates external PHY chips, freeing PCB space and BOM cost. The 32 KB Flash comfortably hosts the Microchip MLA HID stack plus a custom scan matrix handler, while the 8 KB SRAM supports double-buffered endpoint transfers. The 40 MHz M4K core scans a 64-key matrix in < 1 ms with zero host-side latency. Operating from -40 °C to +85 °C industrial grade, the part is suitable for factory-floor control panels where stable supply (2.3-3.6 V) and ESD-tolerant GPIO are needed.
Được đề xuất
Low-Cost Graphical HMI with PMP LCD
For low-cost graphical HMIs with 320x240 QVGA TFT LCDs, the PIC32MX420F032HT-40I/PT fits because the on-chip Parallel Master Port (PMP) directly drives 8-bit parallel LCDs without an external bus driver. The 32 KB Flash holds Microchip's gfx library primitives and 8-bit font tables, while 8 KB SRAM provides double-buffered frame regions for tear-free refresh. The 40 MHz M4K core renders buttons at 60 fps with simple text, and the 10-bit ADC reads touch-screen coordinates through 4-wire resistive panels.
Được đề xuất
Sensor Aggregation Gateway
The PIC32MX420F032HT-40I/PT is suitable for sensor aggregation gateways where multiple UART/I2C/SPI sensors converge at a single MCU node. With two UART, two SPI, and two I2C channels plus 8-channel DMA, the part can sample 16 sensors concurrently without CPU intervention. The 32 KB Flash hosts a small command parser and the 8 KB SRAM buffers sensor frames before USB-CDC upload to a host PC. Industrial temperature grade (-40 to +85 C) supports outdoor sensor boxes, and 2.3-3.6 V supply accommodates battery-backed operation.
Được đề xuất
USB Vendor Class Data Acquisition
For USB vendor class data acquisition (DAQ) modules, this part fits because native USB-OTG Full-Speed at 12 Mbps supports real-time streaming of ADC samples to a host. The 10-bit ADC at 1 Msps generates up to 1 M samples/sec, throttled to USB throughput by DMA. 32 KB Flash holds the vendor-class descriptor plus custom protocol, while 8 KB SRAM is enough for short acquisition bursts. The on-chip USB transceiver removes external PHY cost and the 64-pin TQFP exposes the full ADC channel count for multi-channel DAQ.
Được đề xuất
Home Appliance Control Board
In home appliance control boards (washing machines, induction cookers, microwave ovens), this MCU is suitable because its 40 MHz MIPS core handles user interface, motor control via PWM and safety monitoring concurrently. The five 16-bit timers support 5-channel PWM for variable-speed drives and 4 input-capture channels for zero-crossing detection. Industrial -40 to +85 C grade covers inside-appliance temperatures, and the 64-pin TQFP package is easy to wave-solder at appliance contract manufacturers.
Được đề xuất
POS / Weighing Scale with PMP Display
For POS terminals and weighing scales, the PIC32MX420F032HT-40I/PT fits because the on-chip USB-OTG enumerates as a CDC or HID class device without external bridges, and the PMP directly drives character/graphic LCDs. 32 KB Flash stores vendor-specific USB descriptors and the 8 KB SRAM buffers invoice records. The 10-bit ADC at 16 channels reads load-cell bridges through differential pairs with PGA, while 5 timers drive buzzer PWM and backlight dimming. Industrial temperature grade supports retail and warehouse environments.
Được đề xuất
Industrial CAN Gateway Bridge (USB-CAN)
The PIC32MX420F032HT-40I/PT can serve as a USB-to-UART/SPI bridge for industrial CAN gateways, where it acts as the MCU host between an external CAN controller and a USB-attached host PC. The two UART/SPI/I2C channels connect to external CAN/MCP2515 controllers, while the USB-OTG port enumerates as CDC-ACM for transparent bridging. 40 MHz M4K core handles bit-stuffing and error handling with low-latency response. Industrial -40 to +85 C range supports factory-automation enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX420F032HT-40I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX420F032HT-40V/PT | PIC32MX420F032H-40I/PT | PIC32MX340F128HT-80I/PT |
|---|---|---|---|---|
| Package | 64-TQFP (PT) 10x10 mm | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB (same) | 32 KB (same) | 128 KB |
| SRAM | 8 KB | 8 KB (same) | 8 KB (same) | 16 KB |
| Maximum Clock Speed | 40 MHz | 40 MHz (same) | 40 MHz (same) | 80 MHz |
| Operating Temperature | -40 to +85 C (industrial) | -40 to +105 C (extended) | -40 to +85 C (industrial) | -40 to +85 C (industrial) |
| USB | USB-OTG Full-Speed, on-chip transceiver | USB-OTG Full-Speed, on-chip | USB-OTG Full-Speed, on-chip | USB-OTG Full-Speed, on-chip |
| Packaging Format | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
| Approx. Unit Price (1k qty) | $3.42 | $3.42 (same) | $3.50 | $4.50 |
Bảo phân biệt quan trọng
- On-chip USB-OTG Full-Speed transceiver with DMA (vsPIC32MX340F128HT-80I/PT)
- Wide temperature range option (V suffix) (vsPIC32MX420F032HT-40V/PT)
- Cost-optimised 32 KB Flash tier (vsPIC32MX270F256B-I/SP)
Ghi chú thiết kế
Estimated: With a 3.3 V supply and 40 MHz clock at full I/O toggling, the PIC32MX420 core draws ~50 mA active and ~30 µA sleep. Decoupling must include a 10 µF bulk + 100 nF ceramic per VDD/VSS pair placed within 5 mm of the IC pins per Microchip DS61143H section 2.4. Add a ferrite bead on the USB VBUS line if the device is bus-powered, to suppress switching noise from upstream hosts.
Route the USB D+/D- differential pair with 90-ohm differential impedance and matched trace lengths (delta < 2 mm) for USB-OTG Full-Speed compliance. Place the crystal within 5 mm of the OSC1/OSC2 pins with a ground guard ring to reduce EMI, and keep high-frequency signals (PWM, USB) away from the analog ADC traces to preserve 10-bit ADC accuracy.
Common pitfalls when designing with PIC32MX420 include: (1) forgetting to set the JTAG/debugger disable fuse if debug pins RB6/RB7 must be used as GPIO; (2) not configuring the PLL to skip the PLL multiplier transitions during startup, which can cause intermittent lockups; (3) ignoring the USB attach/debounce requirements of section 27 in DS61143H, leading to enumeration failures; (4) leaving the PMP address latch pins floating, which can cause bus contention.
Estimated: In a typical 64-pin TQFP package with 4-layer PCB and adequate ground pour, theta-JA is ~50 °C/W. At full 50 mA active current and 3.6 V worst-case, dissipation is ~180 mW, yielding a junction temperature rise of ~9 °C above ambient. No heatsink is required, but adequate copper pour (1 square inch minimum) under the exposed die-pad should be maintained for thermal relief.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is a general-purpose industrial MCU, not an automotive-grade part. Choose PIC32MX4xx family AEC-Q100 variants for automotive applications.
